Beam warping machine with a device for the maintenance of required yarn tension

US4941240A · kind A · utility

Assignee

• Liba Maschinefabrik GmbH

Inventors

• Karl Denzler · Naila, DE
• Alfred Böhm · Bad Kötzting, DE
• Alfred Wirth · Schweinfurt, DE

Key dates

• Filing date: Apr 22, 1987
• Grant date: Jul 17, 1990
• Expiry date: Apr 22, 2007

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D02H13/04
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Beam warping machine with a device for the maintenance of required yarn tension in a group of yarns (5) with rolls (7, 8; 34, 35, 36) around which said group of yarns is wound following an S-shaped path in continuous operation, said pair of rolls being driven without slippage in a operative position (51), whereby brakes (30) acting upon the warp beam (3) are activated when the machine is stopped while at the same time one of the rolls (7,35) is swivelled radially out of its operative position (51) and away from the yarn group (5), whereby the swivelling motion ends in a slippage position (37) which can be selectively adjusted as to degree of swivelling by means of an adjustment link (39), whereby the yarns in the area of the rolls (7, 8; 34, 35,36) braked with the displacement assumes a path allowing for slippage of the yarn group (5) against the rolls (7, 8; 35, 36), said path being straighter than the S-shape.